Microchip MCP1802T-0902I/OT: A Compact 90mA CMOS Low-Dropout Voltage Regulator for Modern Electronics

In the world of power management, efficiency, size, and reliability are paramount. The Microchip MCP1802T-0902I/OT stands out as a high-performance, 90mA CMOS low-dropout (LDO) voltage regulator designed to meet the stringent demands of modern portable and battery-powered applications. This device provides a fixed 2.9V output from an input voltage range of 2.7V to 13.2V, making it exceptionally versatile for a wide array of electronic systems.

A key advantage of this LDO is its remarkably low dropout voltage—typically 90mV at 40mA load—which ensures stable operation even as the input voltage approaches the output level. This characteristic is crucial for maximizing battery life in applications where every millivolt counts. Furthermore, the MCP1802T boasts an ultra-low 40µA typical quiescent current during operation, which drops to just 30nA in shutdown mode. This extreme efficiency makes it ideal for devices that spend significant time in sleep or standby states, dramatically reducing overall power consumption.

The regulator is built using CMOS technology, which contributes to its low ground current and high efficiency. It features excellent line and load regulation, ensuring a stable output voltage despite fluctuations in input voltage or output current. Additional built-in protections include overcurrent limiting and thermal shutdown, safeguarding the device and the downstream circuitry under fault conditions.

Housed in a space-saving SOT-23-5 package, the MCP1802T-0902I/OT is perfectly suited for compact designs such as:

Portable medical devices

IoT sensors and modules

Battery-powered consumer electronics

Smart watches and wearable technology

Portable measurement equipment

ICGOOODFIND: The Microchip MCP1802T-0902I/OT is an exceptional choice for designers seeking a highly efficient, miniature, and robust voltage regulation solution. Its combination of low dropout voltage, ultra-low quiescent current, and comprehensive protection features ensures optimal performance and reliability in space- and power-constrained applications.

Keywords: Low-Dropout (LDO) Regulator, Low Quiescent Current, CMOS Technology, 90mA Output Current, Thermal Shutdown Protection.